气候变化领域集成服务门户(CCPortal): Ostracod-based reconstruction of Late Quaternary lake level changes within the Tangra Yumco lake system (southern Tibetan Plateau)

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DOI	10.1002/jqs.3047
	Ostracod-based reconstruction of Late Quaternary lake level changes within the Tangra Yumco lake system (southern Tibetan Plateau)
	Alivernini, M.; Akita, L. G.; Ahlborn, M.; Boerner, N.; Haberzettl, T.; Kasper, T.; Plessen, B.; Peng, P.; Schwalb, A.; Wang, J.; Frenzel, P.
通讯作者	Alivernini, M (通讯作者)
发表日期	2018
ISSN	0267-8179
EISSN	1099-1417
起始页码	713
结束页码	720
卷号	33 期号:6
英文摘要	Tangra Yumco, a large saline lake located in the central-southern part of the Tibetan Plateau, lies in a hydrologically closed basin and is part of a cascade lake system including Tangqung Co, Tangra Yumco and Xuru Co. The extension and position of this lake system makes it valuable for reconstructing palaeoclimatic variations through the lake history and to compare both with the adjacent lake systems. We reconstructed Late Quaternary lake level changes based on data from two lacustrine sediment cores. A micropalaeontological analysis focusing on Ostracoda was carried out combined with dating (C-14, Pb-210, Cs-137), sedimentology and stable isotope data from bulk sediment. Ostracod analysis involves the quantitative documentation of associations. An ostracod-based transfer function for specific conductivity was applied to assess and refine lake level changes and to compare the results with other lake level reconstructions from the Tibetan Plateau for evaluating inter-regional climatic patterns. Seven ostracod species were detected, with Leucocytherella sinensis dominating the associations followed by Leucocythere? dorsotuberosa, Limnocythere inopinata and Tonnacypris gyirongensis. Fabaeformiscandona gyirongensis, Candona candida and Candona xizangensis were found in only a few samples and at low percentages. The synthesis of ostracod-based environmental reconstruction and chronology for samples from Tangra Yumco reveals the evolution of the lake system during the past 17ka. A low lake level around 17calkaBP is followed by a recovering until the reaching of a high stand around 8-9calkaBP. Subsequently, between 7.7 and 2.5calkaBP, it remained relatively stable with a subsequent short-living lowstand-highstand cycle at around 2ka. Thereafter, the ostracod-based conductivity transfer function shows an increase of conductivity corresponding to a lake level rising phase at around 0.4ka. The recorded changes are indicators of past climatic conditions and refine the palaeoclimatic models in this area. Copyright (C) 2018 John Wiley & Sons, Ltd.
关键词	OCEAN SUMMER MONSOON NAM CO BASIN HISTORY
英文关键词	conductivity; Late Quaternary; micropalaeontology; palaeoclimate; Tangra Yumco
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000440926900009
来源期刊	JOURNAL OF QUATERNARY SCIENCE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259320
推荐引用方式 GB/T 7714	Alivernini, M.,Akita, L. G.,Ahlborn, M.,et al. Ostracod-based reconstruction of Late Quaternary lake level changes within the Tangra Yumco lake system (southern Tibetan Plateau)[J]. 中国科学院青藏高原研究所,2018,33(6).
APA	Alivernini, M..,Akita, L. G..,Ahlborn, M..,Boerner, N..,Haberzettl, T..,...&Frenzel, P..(2018).Ostracod-based reconstruction of Late Quaternary lake level changes within the Tangra Yumco lake system (southern Tibetan Plateau).JOURNAL OF QUATERNARY SCIENCE,33(6).
MLA	Alivernini, M.,et al."Ostracod-based reconstruction of Late Quaternary lake level changes within the Tangra Yumco lake system (southern Tibetan Plateau)".JOURNAL OF QUATERNARY SCIENCE 33.6(2018).